Material Expression Add Issue

Thank you. This is what I’m currently trying yes, though I’m dealing with two very different scales which are combined and compared to produce output. I’ll see if I can treat these two branches optimally regarding their respective “domain filling” (I’m not sure how it’s called).

I’ll report here as I make it through. Hopefully in the end I’ll be able to show what it’s all about, a (prototype…) script for water dynamics on a landscape on the gpu, which could also be used as an erosion system (though not at runtime for landscapes, it could be for another custom representation). So this should get brigther !
Again thank you.